Your favorite mountain bike trails have you flitting in and out of trees and over mixed terrain, and Oakley’s Prizm Trail Radar EVs are purpose-built to excel in these variable light conditions. The Prizm Trail lens is optimized to help you easily distinguish obstacles such as rocks, sand, and hard-packed dirt so you always know what’s coming up. The Prizm lens is just the beginning though. The frame uses Oakley's lightweight O-Matter material, and the EV distinction means the lens is taller in front of your eyes for uninhibited vision, even on the steepest climbs when your head is staying low over the stem. The Plutonite lens features High Definition Optics for the highest level of optical clarity and they filter 100% of all UV rays while meeting the highest impact protection standards. Plus, the ear and nose pieces are made of Oakley's Unobtainium to keep your glasses exactly where you want them. Two different sized nose pieces are included with every frame for a perfect fit.